Apoptosis of Tca8113 cell induced by antitumor component-I from Agkistrodon acutus venom through CHOP/Caspase-12 pathway / 中国临床药理学与治疗学
Chinese Journal of Clinical Pharmacology and Therapeutics
;
(12): 271-277, 2020.
Article
in Chinese
| WPRIM
| ID: wpr-855876
ABSTRACT
AIM:
To investigate the effect of endoplasmic reticulum stress pathway on the apoptosis of tongue squamous cancer Tca8113 cells induced by antitumor component-I from Agkistrodon acutus venom (AAVC-I).METHODS:
The in vitro experiments were performed on subculture tongue squamous cancer Tca8113 cells in their growth period. A normal control group, a DL-dithiothreitol (DTT) positive control group and different AAVC-I concentrations were set according to the experiment objective. MTT assay was used to detect the proliferation inhibition of Tca8113 cells after been treated with different concentrations of DTT and AAVC-I for 24 h. The results were used to choose appropriate concentrations of DTT and AAVC-I in DTT positive control group and AAVC-I treated group, respectively. HE staining and Annexin V-FITC/PI double fluorescence staining were used to monitor the apoptosis of Tca8113 cells. Western blot was used to identify the expression levels of apoptosis-related proteins including endoplasmic reticulum stress glucose-regulatory protein 78 (GRP78), enhance-binding protein-homologousprotein (CHOP), cysteine-containing aspartate specific protease-12 (Caspase-12), cysteine-containing aspartate specific protease-9 (Caspase-9) and cysteine-containing aspartate specific protease-3 (Caspase-3).RESULTS:
The proliferation inhibition of Tca8113 cells increased with an increased concentration of AAVC-I concentration (P<0.05), causing cell shrinkage, increased cell gaps, cytonuclear condensation, cell fragmentation, the appearance of apoptotic bodies, and increased rate of apoptosis (P<0.05). In addition, the expression level of GRP78 protein, CHOP protein, proteins of Caspase-12, Caspase-9 and Caspase-3 were increased (P<0.05).CONCLUSION:
Endoplasmic reticulum stress CHOP/Caspase-12 pathway plays an important role in AAVC-I induced Tca8113 cells apoptosis.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Chinese Journal of Clinical Pharmacology and Therapeutics
Year:
2020
Type:
Article
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